Wrong twist preventer for winders



Oct. 8, 1957 J. F. RIDLEY 2,808,998

WRONG TWIST PREVENTER .FOR WINDERS Filed March 28, 1956 8 sheets-sheet 1 Fgz' ' INVENTORV .ron/v f: @104er 'By 0d# 8, 1957 J. F. RIDLEY 2,808,998

WRONG TWIST PREVENTER FOR WINDERS Filed March 28. 1956 s sheets-sheet 2 l INVENToR. .rou/v r. Iwo/.sy

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' Trae/vens Oct. 8, 1957 J. F. RlDLEY 2,808,998

WRONG TWIST PREVENTER FoR WINDERS Filed-March 2a, 1956 5 sheets-sheet s INVENTOR.

JOHN FY RIDLE Y ATTOR/VEVJ nited States Patent C M WRQNG TWIST PREVENTER FOR WINDERS John F. Ridley, Trion, Ga., assignor to Riegel Textile Corporation, a corporation of Delaware Application March 28, 1956, Serial No. 574,485

3 Claims. (Cl. 242-128) This invention relates generally to the detection of stray bobbins having yarn of a wrong twist wound thereon, and more particularly to a wrong twist preventer adapted for attachment to a side of a bobbin'pocket in an automatic spooler or Winder for detecting any stray bobbin.

As is well known, a winding machine of the type known as a BarbenColman spooler, an early and basic disclosure of which is contained in Colman Patent No. 1,175,710, is adapted for winding a plurality of cheeses from a plurality of wound bobbins having yarn of either Z or S twist wound thereon. Z ltwist or left twist is the regular twist and is usually employed in winding machines while less frequently S twist or right twist yarn is employed. Since yarn of both S and Z twists is usually employed in a single plant, a bobbin having S twist yarn wound thereon is sometimes placed with bobbins having Z twist yarn wound thereon and is used when Z twist yarn should be employed. On account of this, it has been the practice heretofore to tint S twist yarn with a fugitive dye or with chalk, Z twist yarn not being tinted or tinted with another color. This tinting has been a substantial expense to the plants but it is completely eliminated by the use of applicants invention at a substantial saving.

Yarn is always unwound from the bobbin in a direction opposite to the twist, e. g., Z twist yarn having a counter-clockwise twist is unwound from the bobbin in a clock-wise direction while S twist yarn having a clockwise twist is unwound in a counter-clockwise direction, and while being unwound the yarn balloons and contacts the sides of the bobbin pockets in a Barber-Colman spooler. Since yarn having a Z twist is unwound in a clockwise direction and S twist yarn is unwound in a counter-clockwise direction, the unwinding Z twist yarn balloons from one side of the bobbin while the unwinding S twist yarn balloons from the opposite side of the bobbin.

The present invention takes advantage of this feature by providing an adjustable member which is positioned in one direction to snare or trap ballooning S twist yarn and in the opposite direction to snare or trap ballooning Z twist yarn.

These and other features of the present invention are described in further detail below in connection with the accompanying drawings, in which:

Fig. l is a fragmentary perspective view illustrating a Barber-Colman spooler of the type referred to above, and showing a plurality of the wrong twist preventers attached to a side of the bobbin pockets;

Fig. 2 is a fragmentary vertical section view through the spooler and showing the specilic location of the wrong twist preventer;

Fig. 3 is a fragmentary front elevation of a bobbin pocket in a spooler and showing the position of the bobbin in relation to the wrong twist preventer;

Fig. 4 is an enlarged fragmentary view of the wrong twist preventer shown in Fig. 3;

2,808,998 Patented Oct. 8, 1957 Fig. 5 is an enlarged side view of the wrong twist preventer shown in Fig. 4; and

Fig. 6 is an enlarged top plan view of the wrong twist preventer shown in Fig. 5.

Referring now to the drawings, and more particularly at first to Fig. l, a winding machine such .as has been previously mentioned above is indicated generally by reference numeral 10, and the plurality of cheeses being wound are represented at 12. The cheeses 12 are shown in an active winding position in Fig. l and being rotated by contact with a driving drum 13. It is understood that these cheeses are automatically shiftable between the active winding position as shown in Fig. l inwardly of the winder and an inactive position, outwardly of the machine.

The wrong twist preventer shown in Figs. l, 2 and 3 and indicated generally by numeral 14 is attached to the top portion of the side plate 16 of the bobbin pocket. The bobbins 20 are shown having a regular or Z twist yarn wound thereon and unwinding in a clockwise direction with the yarn ballooning and contacting the wrong twist preventer which is positioned for a Z twist yarn, as will be explained later.

Figs. 4, 5 and 6 show in more detail the particular arrangement of the wrong twist preventer. The plate member 22 of the wrong twist preventer has apertures 24 arranged therethrough at each end with attachment means, not shown, that extend through the apertures and secure vthe plate member to the side plate i6 of the bobbin pockets. The hook member indicated generally by the numeral 3i? comprises aV hook portion 32 which extends outwardly from the plate member 22. The hook member rotates between two xed positions substantially 18() de grees apart with respect to the rotation of the hook member. At each of these positions, a stud $6 extends outwardly from the plate member and acts as a stop for the end of the hook member. Since the hook member is relatively light and might easily be displaced, a weight 38 is attached to the hook member to give it additional stability. A set screw ill is arranged on the weight to allow positioning of the weight along the hook member.

As shown further in Figs. 4, 5 and 6 a tubular portion 42 extends outwardly from the plate member 22 on the same side of the plate member as the studs 36. The hook member extends through the aperture in this tubular portion and the hook portion extends from the opposite side of the plate 22. -lt is noted that a back side of the hook portion presents a substantially smooth surface over which yarn will freely slide without being tensioned or obstructed thereby. The open front side of the hook however, presents a space between the hook portion and the plate member and if yarn is trapped or snared in this open space, it will be tensioned by the friction and tension created by the yarn contacting the open portion of the hook `and will thereby be broken, the break normally occurring at the cheese.

As shown in Figs. l through 3 for a Z twist yarn, the open part of the hook portion extends outwardly from the Barber-Colman Winder with the weight on the same side as the open hook portion. Figs. 4 through 6 show the open part of the hook portion extending to the opposite direction and this would be the proper position for the hook portion if an S twist yarn is employed. -ln Figs. l through 3 however, the hook portion is disclosed in a position for a Z twist yarn and if an S twist yarn is being unwound in a counter-clockwise position, it will be snared by the open side of the hook portion and be broken since S twist yarn balloons in an opposite direction from Z twist yarn. Accordingly if it is desired to use an S twist yarn, all that requires attention is for the weight with the hook member attached thereto to be rotated degrees thereby presenting the open hook portion in a different direction. In this instance, Z twist yarn being unwound in a clockwise direction will be snared by the open side of the hook portion and thereby tensioned and broken. v

The ,present invention hasbeen described in detail above for purpose of illustration only and is not intended to be limited by that description or otherwise except as defined in the appended claims.

I claim:

l. In a yarn winder of the type adapted for winding a plurality of cheeses from a plurality of Wound bobbins and in which the wound bobbins are located in bobbin pockets and the unwinding yarn balloons against the sides of said bobbin pockets, the improvement which comprises a plate member attached to a side of the bobbin pocket above the wound bobbin, an adjustable hook member rotatable between two positions on said plate memberV approximately 180 degrees apart with respect to the rotation of said hook member, a stop element at each position for engaging one end of said hook member, the

other end of said hook member being a hook portion extending outwardly from said plate member and having a front and back side, the back side of the hook portion presenting a substantially smooth surface from one end or" the plate member and the front open side of the hook portion presenting a snare from the other end of the plate member, said hook member being positioned so that ballooning yarn of a desired twist slides over the back side of said hook portion while ballooning yarn of an opposite twist from that desired snares and is broken by the front open side of said hook portion thereby preventing yarn of an undesired twist from being ernployed.

2. A wrong twist yarn preventer adapted for attachment to a side of a bobbin pocket, said preventer comprising a plate member having a tubular portion extending normally from one side thereof with an aperture extending through said tubular portion and said plate member, a hook member extending through said aperture and swingable between two positions approximately 180 degrees apart, a stud extending outwardly from-said plate at each of said positions on the same side of said plate member as said tubular portion and providing stops for one end of said hook member, said hook member having a hook portion on its other end with said hook portion arranged to tension and break a strand of ballooning yarn having an opposite twist from that desired when said hook portion is positioned for a desired twist.

3. In a yarn winding machine of the type adapted for winding a plurality of cheeses from a plurality of wound bobbins and in which the wound bobbins are located in bobbin pockets and the unwinding yarn balloons against the sides of said bobbin pockets, the improvement comprising a wrong twist preventer having a plate member attached to a side, ofl said pocket assembly above the wound bobbin, a tubular portion extending normally from one side of said plate member with an aperture extending through said tubular portion and said plate member, a hook member extending through said aperture and swingable between two positions approximately 180 degrees apart, a studtextending outwardly from said plate member at each of said positions on the same side of said plate member as said tubular portion and providing stops for one end of said hook member, said hook member having a hook portion on its other end with said hook portion engaging and breaking the ballooning yarn having an opposite twist from that desired when said hook portion is positioned for a desired twist.

References-,Citedin the, le of this Ypatent UNITED STATES PATENTS 2,635,831 Hays t Apr. 21, 195s 

